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Multi-Way Conventional loudspeakers with crossovers

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Old 18th September 2019, 03:21 PM   #2721
gadut is offline gadut  Indonesia
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Join Date: Dec 2008
Location: Jakarta, Indonesia
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Originally Posted by Juhazi View Post
Now this looks good! Which dsp are yo using? Anyway now the fun begins with listening, measuring and experimenting!
two of minidsp 2x4HD, making monoblock dsp + 4ch amplifier

indeed after electronic & woodworking completed, i'l have to learn on digital domain
AD1865||DCB1||FW PSU||J2||M2||SIT L'Amp||Open Baffle
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Old 23rd September 2019, 12:53 PM   #2722
Jeanper is offline Jeanper  Sweden
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Location: Stockholm
Latest iterations of my open baffle speakers. they are now a three-way design, Scan-Speak H2606 tweeter, Coral Flat 8 II mid and Eminence Alpha 15 bass.
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Old Today, 12:19 AM   #2723
John Hi is offline John Hi  New Zealand
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Join Date: Oct 2019

I'd like to show my 3 way active open baffles. They've been running well for a few years now, with occasional upgrades along the way.
They look like box speakers from the angle photos, because they are 'U' baffles - but they're open at the back.

Bass is 2x12", from BK electronics in the UK. Used in their well regarded 'Monolith' subs. Similar to Eminence Lab 12.

Mids are Dayton RS150 6" Ali cones. Vifa XT25 ring tweeters on Visaton WG148 waveguides, plus 19mm rear tweeters.

Amplification, 4 stereo amps = 8 channels. Heavily rebuilt Quad 405's with no current limiting.

Active crossover. Digital FIR linear phase, measured with REW, programmed in rePhase and run through Equalizer APO.

All music and processing on a windows computer. 20Hz-20KHz -3dB in room. Measured with Cross Spectrum individually calibrated UMIK-1.

Full size speakers on 'U' baffles are unusual because of the potential for resonances in the rear cavity. The up side is powerful extended bass which integrates perfectly with the rest of the speaker.

Actually the rear resonances are fairly easily tamed. A combination of design, damping and EQ tames them totally.
The speakers are curved and sloped, with no parallel sides or edges, so resonances are not encouraged at any particular frequency, and the rear cavity is well damped with foam and wool.
Any remaining resonances are smaller that the room resonances and can be EQ'd out easily.


The finish on the speakers is Piano Black, so there are some weird reflections of furniture on the side of the right speaker.


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